When is the best day to buy a car in December 2025?

The month's best stretch opens Sun, Dec 14, 11:00 PM EST and holds until Wed, Dec 17, 3:00 AM EST, scoring 68 against a base of 50, computed in America/New York (Eastern Time). Scores compare moments; they do not promise results.

How are these scores computed?

Every hour is rated on four factors — the Moon void-of-course, Mercury retrograde, the Moon's phase, and its next applying aspect for this kind of decision — then averaged per local day under a versioned config. These pages stop there, because a page has no location; the app adds a fifth factor, the Moon's house, once it knows where you are, which is what lets it name an hour rather than a day. Scores start at 50. Higher scores mean more favorable conditions under Orrery’s rules, not a higher chance of success. Check the times against your availability.

What does void-of-course mean?

The interval after the Moon's last exact major aspect in a sign, until it enters the next. Orrery uses a modern definition and assigns a score penalty to starts during this interval.

Sign / commit — December 2025

The best days to buy a car in December 2025.

Computed in America/New York (Eastern Time). Event and interval times include their Eastern Time zone label (EDT or EST). A different timezone shifts the day boundaries — the sky doesn’t change, but the local days it lands in can.

You’ve got the purchase on the calendar. Here is December 2025, scored for committing: every hour rated on the Moon void-of-course, Mercury retrograde, the Moon’s phase, and its next applying aspect for this decision — then averaged per day. Scores start at 50. Higher scores mean more favorable conditions under Orrery’s rules, not a higher chance of success. Check the times against your availability.

The month’s best stretch opens Sun, Dec 14, 11:00 PM EST and holds until Wed, Dec 17, 3:00 AM EST, scoring 68.

Amber rows below are the days that stretch touches. Scores compare moments; they do not promise results.

Rows list factors in that day’s hourly samples. An applying aspect’s exact date can fall on a later day.

Date	Day	Score	The computed sky
Dec 1	Mon	36	Applying Moon–Saturn sextile · exact Wed, Dec 3, 2025, 2:15 PM ESTWaxing Moon (sampled hours)Void-of-course Mon, Dec 1, 2025, 1:14 PM EST – Mon, Dec 1, 2025, 10:12 PM EST
Dec 2	Tue	54	Applying Moon–Saturn sextile · exact Wed, Dec 3, 2025, 2:15 PM ESTWaxing Moon (sampled hours)
Dec 3	Wed	49	Applying Moon–Saturn sextile · exact Wed, Dec 3, 2025, 2:15 PM ESTApplying Moon–Saturn square · exact Fri, Dec 5, 2025, 1:19 PM ESTWaxing Moon (sampled hours)Void-of-course Wed, Dec 3, 2025, 8:50 PM EST – Wed, Dec 3, 2025, 9:48 PM EST
Dec 4	Thu	36	Applying Moon–Saturn square · exact Fri, Dec 5, 2025, 1:19 PM ESTWaning Moon (sampled hours)Waxing Moon (sampled hours)
Dec 5	Fri	49	Applying Moon–Saturn square · exact Fri, Dec 5, 2025, 1:19 PM ESTApplying Moon–Saturn trine · exact Sun, Dec 7, 2025, 1:50 PM ESTWaning Moon (sampled hours)Void-of-course Fri, Dec 5, 2025, 7:55 PM EST – Fri, Dec 5, 2025, 8:54 PM EST
Dec 6	Sat	68	Applying Moon–Saturn trine · exact Sun, Dec 7, 2025, 1:50 PM ESTWaning Moon (sampled hours)
Dec 7	Sun	62	Applying Moon–Saturn trine · exact Sun, Dec 7, 2025, 1:50 PM ESTWaning Moon (sampled hours)Void-of-course Sun, Dec 7, 2025, 8:44 PM EST – Sun, Dec 7, 2025, 9:48 PM EST
Dec 8	Mon	56	Waning Moon (sampled hours)
Dec 9	Tue	56	Waning Moon (sampled hours)
Dec 10	Wed	40	Applying Moon–Saturn opposition · exact Fri, Dec 12, 2025, 2:00 AM ESTWaning Moon (sampled hours)Void-of-course Tue, Dec 9, 2025, 11:56 PM EST – Wed, Dec 10, 2025, 2:20 AM EST
Dec 11	Thu	42	Applying Moon–Saturn opposition · exact Fri, Dec 12, 2025, 2:00 AM ESTWaning Moon (sampled hours)
Dec 12	Fri	52	Applying Moon–Saturn opposition · exact Fri, Dec 12, 2025, 2:00 AM ESTWaning Moon (sampled hours)Void-of-course Fri, Dec 12, 2025, 9:50 AM EST – Fri, Dec 12, 2025, 11:04 AM EST
Dec 13	Sat	56	Waning Moon (sampled hours)
Dec 14	Sun	56	Applying Moon–Saturn trine · exact Wed, Dec 17, 2025, 2:30 AM ESTWaning Moon (sampled hours)
Dec 15	Mon	68	Applying Moon–Saturn trine · exact Wed, Dec 17, 2025, 2:30 AM ESTWaning Moon (sampled hours)
Dec 16	Tue	68	Applying Moon–Saturn trine · exact Wed, Dec 17, 2025, 2:30 AM ESTWaning Moon (sampled hours)
Dec 17	Wed	50	Applying Moon–Saturn square · exact Fri, Dec 19, 2025, 3:03 PM ESTApplying Moon–Saturn trine · exact Wed, Dec 17, 2025, 2:30 AM ESTWaning Moon (sampled hours)Void-of-course Wed, Dec 17, 2025, 10:24 AM EST – Wed, Dec 17, 2025, 11:38 AM EST
Dec 18	Thu	44	Applying Moon–Saturn square · exact Fri, Dec 19, 2025, 3:03 PM ESTWaning Moon (sampled hours)
Dec 19	Fri	46	Applying Moon–Saturn square · exact Fri, Dec 19, 2025, 3:03 PM ESTWaning Moon (sampled hours)Waxing Moon (sampled hours)Void-of-course Fri, Dec 19, 2025, 10:40 PM EST – Fri, Dec 19, 2025, 11:52 PM EST
Dec 20	Sat	54	Applying Moon–Saturn sextile · exact Mon, Dec 22, 2025, 2:27 AM ESTWaxing Moon (sampled hours)
Dec 21	Sun	54	Applying Moon–Saturn sextile · exact Mon, Dec 22, 2025, 2:27 AM ESTWaxing Moon (sampled hours)
Dec 22	Mon	46	Applying Moon–Saturn sextile · exact Mon, Dec 22, 2025, 2:27 AM ESTWaxing Moon (sampled hours)Void-of-course Mon, Dec 22, 2025, 9:43 AM EST – Mon, Dec 22, 2025, 10:51 AM EST
Dec 23	Tue	46	Waxing Moon (sampled hours)
Dec 24	Wed	40	Applying Moon–Saturn conjunction · exact Fri, Dec 26, 2025, 7:41 PM ESTWaxing Moon (sampled hours)Void-of-course Wed, Dec 24, 2025, 4:41 PM EST – Wed, Dec 24, 2025, 8:08 PM EST
Dec 25	Thu	38	Applying Moon–Saturn conjunction · exact Fri, Dec 26, 2025, 7:41 PM ESTWaxing Moon (sampled hours)
Dec 26	Fri	39	Applying Moon–Saturn conjunction · exact Fri, Dec 26, 2025, 7:41 PM ESTWaxing Moon (sampled hours)
Dec 27	Sat	45	Waxing Moon (sampled hours)Void-of-course Sat, Dec 27, 2025, 2:03 AM EST – Sat, Dec 27, 2025, 3:01 AM EST
Dec 28	Sun	44	Waxing Moon (sampled hours)Void-of-course Sun, Dec 28, 2025, 9:13 PM EST – Mon, Dec 29, 2025, 6:57 AM EST
Dec 29	Mon	44	Applying Moon–Saturn sextile · exact Wed, Dec 31, 2025, 1:58 AM ESTWaxing Moon (sampled hours)Void-of-course Sun, Dec 28, 2025, 9:13 PM EST – Mon, Dec 29, 2025, 6:57 AM EST
Dec 30	Tue	54	Applying Moon–Saturn sextile · exact Wed, Dec 31, 2025, 1:58 AM ESTWaxing Moon (sampled hours)
Dec 31	Wed	38	Applying Moon–Saturn sextile · exact Wed, Dec 31, 2025, 1:58 AM ESTApplying Moon–Saturn square · exact Fri, Jan 2, 2026, 2:09 AM ESTWaxing Moon (sampled hours)Void-of-course Wed, Dec 31, 2025, 7:24 AM EST – Wed, Dec 31, 2025, 8:13 AM EST

How to read this

Void-of-course— after the Moon’s last exact aspect in a sign, before it enters the next. The classical read: finish things; don’t start them. Exact times are in the void calendar for December 2025. Mercury retrograde — the traditional caution for messages, deals, and signatures; station times to the second are in the retrograde dates. Waxing / waning — growing favors starts, thinning favors finishing. The applying aspect— the Moon’s next exact contact with this decision’s planet, easy angles helping, hard angles dragging. The full rulebook — which conventions Orrery follows and which it refuses — is in Method.

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